diff mbox series

[v7,2/4] dt-bindings: input: Add Cypress TT2100 touchscreen controller

Message ID 20220323120021.361137-3-alistair@alistair23.me (mailing list archive)
State New, archived
Headers show
Series Add support for the Cypress cyttsp5 | expand

Commit Message

Alistair Francis March 23, 2022, noon UTC 
Add the Cypress TrueTouch Generation 5 touchscreen device tree bindings
documentation. It can use I2C or SPI bus.
This touchscreen can handle some defined zone that are designed and
sent as button. To be able to customize the keycode sent, the
"linux,code" property in a "button" sub-node can be used.

Signed-off-by: Alistair Francis <alistair@alistair23.me>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
---
 .../input/touchscreen/cypress,tt21000.yaml    | 101 ++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/input/touchscreen/cypress,tt21000.yaml

Comments

Rob Herring (Arm) March 29, 2022, 11:12 p.m. UTC | #1 
On Wed, 23 Mar 2022 22:00:19 +1000, Alistair Francis wrote:
> Add the Cypress TrueTouch Generation 5 touchscreen device tree bindings
> documentation. It can use I2C or SPI bus.
> This touchscreen can handle some defined zone that are designed and
> sent as button. To be able to customize the keycode sent, the
> "linux,code" property in a "button" sub-node can be used.
> 
> Signed-off-by: Alistair Francis <alistair@alistair23.me>
> Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
> ---
>  .../input/touchscreen/cypress,tt21000.yaml    | 101 ++++++++++++++++++
>  1 file changed, 101 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/input/touchscreen/cypress,tt21000.yaml
> 

Reviewed-by: Rob Herring <robh@kernel.org>
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/input/touchscreen/cypress,tt21000.yaml b/Documentation/devicetree/bindings/input/touchscreen/cypress,tt21000.yaml
new file mode 100644
index 000000000000..3fc4b7011040
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/touchscreen/cypress,tt21000.yaml
@@ -0,0 +1,101 @@ 
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/touchscreen/cypress,tt21000.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Cypress TT2100 touchscreen controller
+
+description: The Cypress TT2100 series (also known as "CYTTSP5" after
+  the marketing name Cypress TrueTouch Standard Product series 5).
+
+maintainers:
+  - Alistair Francis <alistair@alistair23.me>
+
+allOf:
+  - $ref: touchscreen.yaml#
+
+properties:
+  compatible:
+    const: cypress,tt21000
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  vdd-supply:
+    description: Regulator for voltage.
+
+  reset-gpios:
+    maxItems: 1
+
+  linux,keycodes:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: EV_ABS specific event code generated by the axis.
+
+patternProperties:
+  "^button@[0-9]+$":
+    type: object
+    properties:
+      reg:
+        maxItems: 1
+      linux,keycodes:
+        $ref: /schemas/types.yaml#/definitions/uint32
+        description: Keycode to emit
+
+    required:
+      - reg
+      - linux,keycodes
+
+    additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - vdd-supply
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/input/linux-event-codes.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        touchscreen@24 {
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            compatible = "cypress,tt21000";
+            reg = <0x24>;
+            pinctrl-names = "default";
+            pinctrl-0 = <&tp_reset_ds203>;
+            interrupt-parent = <&pio>;
+            interrupts = <1 5 IRQ_TYPE_LEVEL_LOW>;
+            reset-gpios = <&pio 7 1 GPIO_ACTIVE_LOW>;
+            vdd-supply = <&reg_touch>;
+
+            button@0 {
+                reg = <0>;
+                linux,keycodes = <KEY_HOMEPAGE>;
+            };
+
+            button@1 {
+                reg = <1>;
+                linux,keycodes = <KEY_MENU>;
+            };
+
+            button@2 {
+                reg = <2>;
+                linux,keycodes = <KEY_BACK>;
+            };
+        };
+    };
+...